On 4/26/07, Ståle Kristoffersen <staalebk_at_ifi.uio.no> wrote: > On 2007-04-26 at 16:36, Ollivier Robert wrote: > > According to Alexandre Biancalana: > > > # zpool create backup raidz ad9 ad11 > > > > Note, raidz with two disks is almost the same as a mirror so the real, > > usable space is half. In raidz, if you have N disks, the total usable > > capacity is N-1. > > Well, that would have been fine if it did the same thing with a mirror, but > thats not the case: > > > # zpool create test raidz ad1 ad2 ad3 > # zpool list > NAME SIZE USED AVAIL CAP HEALTH ALTROOT > test 1.48G 773M 747M 50% ONLINE - > # df -ht zfs > Filesystem Size Used Avail Capacity Mounted on > test 980M 32K 980M 0% /test > > # zpool destroy test > # zpool create test mirror ad1 ad2 > # zpool list > NAME SIZE USED AVAIL CAP HEALTH ALTROOT > test 504M 88K 504M 0% ONLINE - > # df -ht zfs > Filesystem Size Used Avail Capacity Mounted on > test 472M 32K 472M 0% /test > Try creating the raidz with 2 disks like Alexandre did... -- Joao BarrosReceived on Thu Apr 26 2007 - 16:02:05 UTC
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